Dame Harriet Mary Walter, DBE (born 24 September 1950) is an English actress of stage and screen. Her film appearances include Sense and Sensibility (1995), Villa des Roses (2002), Atonement (2007), and Man Up (2015). On television, she starred in the ITV drama series Law & Order: UK (2009–14). She was appointed Dame Commander of the Order of the British Empire (DBE) in 2011 for services to drama.